2556433013 has 8 divisors (see below), whose sum is σ = 2582003328. Its totient is φ = 2530914624.

The previous prime is 2556433001. The next prime is 2556433037. The reversal of 2556433013 is 3103346552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556433013 - 2⁴ = 2556432997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556433513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90020 + ... + 114962.

It is an arithmetic number, because the mean of its divisors is an integer number (322750416).

Almost surely, 2^2556433013 is an apocalyptic number.

It is an amenable number.

2556433013 is a deficient number, since it is larger than the sum of its proper divisors (25570315).

2556433013 is a wasteful number, since it uses less digits than its factorization.

2556433013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25963.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 2556433013 is about 50561.1808900860. The cubic root of 2556433013 is about 1367.3451013965.

Adding to 2556433013 its reverse (3103346552), we get a palindrome (5659779565).

The spelling of 2556433013 in words is "two billion, five hundred fifty-six million, four hundred thirty-three thousand, thirteen".